The presence of this nuthatch is typically announced by its nasal calls. The red-breasted nuthatch has the un­usual habit of smearing resin around the entrance hole to its nest, presumably to deter predators and competitors from entering the nest. During the breeding season, the red-breasted is usually found in forests dominated by firs and spruces; during migration and winter, it is found in a variety of habitats. When not breeding, the red-breasted can be seen in small flocks with other nuthatches, chickadees, kinglets, and brown creepers. Monotypic. Length 4.5".

Small, with a prominent supercilium that contrasts with darker crown and eye line. Adult male: bold face pattern: Inky black crown and nape; prominent white supercilium extending from sides of forehead